Over 38,000 runners participated in the London Marathon today, including celebrities, a couple who got married during the race, and quite a few who were raising money or awareness for various causes. There were also plenty of people in costume, whether they represented a charity, advertised a sponsor, or were just trying to draw attention. Jack Woodward, shown here, ran for the Male Cancer Awareness Campaign. See a collection of 17 costumed runners in the London Marathon at Buzzfeed.